Ulrich, E. O.; Scofield, W. H. (1897). The Lower Silurian Gastropoda of Minnesota. <em>The Geology of Minnesota.</em> 3(2): 813-1081, pls. 61-82., available online athttps://www.biodiversitylibrary.org/page/14923788 page(s): 879, pl. 65, figs 1, 2 [details]
MolluscaBase eds. (2025). MolluscaBase. Tetranota macra Ulrich & Scofield, 1897 †. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1790142 on 2025-05-24
Marine Species Traits editorial board (2025). Marine Species Traits. Tetranota macra Ulrich & Scofield, 1897 †. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1790142 on 2025-05-24
original descriptionUlrich, E. O.; Scofield, W. H. (1897). The Lower Silurian Gastropoda of Minnesota. <em>The Geology of Minnesota.</em> 3(2): 813-1081, pls. 61-82., available online athttps://www.biodiversitylibrary.org/page/14923788 page(s): 879, pl. 65, figs 1, 2 [details]
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